Accession Number : ADA300630

Title :   Contact Corrosion Between Carbon Fiber Reinforced Composite Materials and High-Strength Metals,

Corporate Author : NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH

Personal Author(s) : Gao, Mantong ; Xu, Changgan ; Du, Zeyi ; Wang, Tiemin

PDF Url : ADA300630

Report Date : 09 AUG 1995

Pagination or Media Count : 15

Abstract : Experimental results show that when carbon fiber/epoxy resin composite materials are joined with high-strength titanium alloys, aluminum alloys, lCrl8Ni9Ti stainless steel, or other structural materials, galvanic corrosion and crevice corrosion take place on the contact boundaries. This corrosion is primarily determined by the electrochemical properties of the materials. It is also related to the materials' mutual coupling situation, treatment technology, and environmental conditions. Galvanic corrosion is affected by the coupled materials' static energy of corrosion (Ecorr), galvanic currents, and other dynamic closed-circuit properties. In a 3.5% NaCl solution, materials' electrochemical properties and treatment techniques tended to have similar effects on galvanic corrosion and crevice corrosion. When soaking weight loss methods, salt spray methods, and crevice corrosion methods were used to test couples of CFRM with anodized titanium alloys or couples of CFRM with hot water-sealed or chromate-sealed aluminum alloys, the materials were proved to be stable and satisfactory for the needs of engineering applications. (MM)

Descriptors :   *CORROSION, *FIBER REINFORCED COMPOSITES, *HIGH STRENGTH ALLOYS, COUPLING(INTERACTION), METALS, SPACECRAFT, AIRCRAFT, ALUMINUM ALLOYS, STAINLESS STEEL, ELECTROCHEMISTRY, CARBON FIBERS, HIGH STRENGTH, TRANSLATIONS, SALTS, WEIGHT REDUCTION, SPRAYS, TITANIUM ALLOYS, CHINA, CONSTRUCTION MATERIALS, CHINESE LANGUAGE, GALVANIC CORROSION.

Subject Categories : Laminates and Composite Materials
      Properties of Metals and Alloys

Distribution Statement : APPROVED FOR PUBLIC RELEASE